Yealink T53 (Sem PSU)

12 VoIP accounts
Call hold, mute, DND
Redial, call return, auto answer
One-touch speed dial, hotline
Call forward, call waiting, call transfer
Group listening, SMS, emergency call
3-way conferencing
Direct IP call without SIP proxy
Ring tone selection/import/delete
Set date time manually or automatically
Dial plan, XML Browser, Action URL/URI
RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
USB port (2.0 compliant) for:
- Wired/wireless USB headset
- USB call recording through USB flash drive
- Bluetooth headset through BT40
- Bluetooth call through BT40
- Mobile contacts synchronization through BT40
- Wi-Fi through WF40/WF50
- Expansion module EXP50 (up to 3)
Content Sharing (via Yealink VCD)(1)
Enhanced DSS key

Local phonebook up to 1000 entries
Black list
XML/LDAP remote phonebook
Smart dialing
Phonebook search/import/export
Call history: dialed/received/missed/forwarded

Busy Lamp Field (BLF) 
Bridged Line Apperance (BLA)
Anonymous call, anonymous call rejection 
Hot-desking 
Voice mail
Flexible seating
Executive and Assistant 
Call park, call pickup
Centralized call recording
Call recording

3.7" 360x160-pixel graphical LCD with backlight
LED for call and message waiting indication
Dual-color (red or green) illuminated LEDs for line status 
Intuitive user interface with icons and soft keys
Multilingual user interface
Caller ID with name and number
Power saving

8 line keys with LED
8 line keys can be programmed up to 21 various features (3-page view)
5 features keys: mute, headset, message, redial, hands-free speakerphone
4 context-sensitive “soft” keys
6 navigation keys
Volume control keys
Illuminated mute/headset/hands-free speakerphone key

Dual-port Gigabit Ethernet
Power over Ethernet (IEEE 802.3af), class 2
1 x USB port (2.0 compliant)
1 x RJ9 (4P4C) handset port
1 x RJ9 (4P4C) headset port

Configuration: browser/phone/auto-provision
Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy 
Auto-provision with PnP 
Broadsoft device management
Zero-sp-touch, TR-069 
Phone lock for personal privacy protection
Reset to factory, reboot 
Package tracing export, system log

SIP v1 (RFC2543), v2 (RFC3261)
Call server redundancy supported
NAT traversal: STUN mode
Proxy mode and peer-to-peer SIP link mode
IP assignment: static/DHCP/PPPoE 
HTTP/HTTPS web server
Time and date synchronization using SNTP 
UDP/TCP/DNS-SRV(RFC 3263)
QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
SRTP for voice 
Transport Layer Security (TLS1.2) 
HTTPS certificate manager 
AES encryption for configuration file 
Digest authentication
OpenVPN, IEEE802.1X
IPv6, LLDP/CDP/DHCP VLAN, ICE

Color: Classic Grey
Wall mountable (optional)
External Yealink AC adapter (optional): AC 100~240V input and DC 5V/1.2A output
USB output currency: 5V 500mA
Power consumption (PSU): 1.3W-2.3W
Power consumption (PoE): 1.8W-3.1W
Dimension (W*D*H*T): 212mm*210.6mm*174.5mm*41.7mm
Operating humidity: 10~95%
Operating temperature: -10~50°C (+14~122°F)

Yealink SIP-T53 IP phone
Handset with handset cord
Ethernet Cable
Stand
Quick Start Guide
Power Adapter (Optional)